1,2,4-Trichlorobenzene
Felsenthal Water
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-14 | 14016010509 | ND |
| 2014-04-28 | 14121001901 | ND |
| 2014-08-06 | 14219011101 | ND |
| 2014-10-28 | 14303004801 | ND |
| 2015-03-09 | 15071002301 | ND |
| 2015-05-26 | 15148008201 | ND |
| 2015-07-14 | 15197005701 | ND |
| 2015-10-15 | 15289010201 | ND |
| 2016-01-13 | 16015008301 | ND |
| 2016-06-08 | 16161005101 | ND |
| 2016-09-06 | 16252007801 | ND |
| 2016-10-31 | 16308000601 | ND |
| 2017-02-27 | 17060000608 | ND |
| 2017-08-02 | 17215006601 | ND |
| 2017-11-01 | 17306000501 | ND |
| 2018-02-27 | 18060003101 | ND |
| 2018-05-01 | 18123006001 | ND |
| 2018-07-10 | 18193006801 | ND |
| 2018-10-24 | 18298000201 | ND |
| 2019-02-18 | 19052004601 | ND |
| 2019-07-15 | 19198002101 | ND |
| 2019-10-28 | 19303001701 | ND |